# Solved Problems-6

Problem-6
Determine the current density function  associated with the magnetic field defined by
(a)  (Cartesian)
(b)  (Cylindrical)
(c)  (Spherical)
Solution
(a)

By Ampereâ€™s law in Cartesian coordinates,

(b) By Ampereâ€™s law in cylindrical coordinates,

(c)

By Ampereâ€™s law in spherical coordinates,